Create new WebApplication
Create new tag library
Create new tag file and add this tagfile into a library with name "tagName"
import tag library into index.jsp page:
<%@ taglib prefix="dd" uri="/WEB-INF/tlds/library.tld" %>
use tag from library in index.jsp page:
<dd:tagName />
an error message is highlighted, but project is correct - this error message should be removed